تقرير
Role of Local Ru Hexamers in Superconductivity of Ruthenium Phosphide
| العنوان: | Role of Local Ru Hexamers in Superconductivity of Ruthenium Phosphide |
|---|---|
| المؤلفون: | Koch, Robert J., Aryal, Niraj, Ivashko, Oleh, Liu, Yu, Abeykoon, Milinda, Bauer, Eric D., Zimmermann, Martin v., Yin, Weiguo, Petrovic, Cedomir, Bozin, Emil S. |
| المصدر: | Phys. Rev. B 106, 214516 (2022) |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Materials Science |
| الوصف: | Superconductivity in binary ruthenium pnictides occurs proximal to and upon suppression of a mysterious non-magnetic ground state, preceded by a pseudogap phase associated with Fermi surface instability, and its critical temperature, T$_{c}$, is maximized around the pseudogap quantum critical point. By analogy with isoelectronic iron based counterparts, antiferromagnetic fluctuations became "usual suspects" as putative mediators of superconducting pairing. Here we report on a high temperature local symmetry breaking in RuP, the parent of the maximum-Tc branch of these novel superconductors, revealed by combined nanostructure-sensitive powder and single crystal X-ray total scattering experiments. Large local Ru$_{6}$ hexamer distortions associated with orbital-charge trimerization form above the two-stage electronic transition in RuP. While hexamer ordering enables the nonmagnetic ground state and presumed complex oligomerization, the relevance of pseudogap fluctuations for superconductivity emerges as a distinct prospect. As a transition metal system in which partial d-manifold filling combined with high crystal symmetry promotes electronic instabilities, this represents a further example of local electronic precursors underpinning the macroscopic collective behavior of quantum materials. Comment: 10 pages 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.106.214516 |
| URL الوصول: | http://arxiv.org/abs/2208.09523 |
| رقم الأكسشن: | edsarx.2208.09523 |
| قاعدة البيانات: | arXiv |
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